Water vending machine



FIG. 1 is a front elevational view of a water vending machine showing my new design;

FIG. 2 is a side elevational view thereof the opposite side is substantially the same;

FIG. 3 is a top plan view thereof the bottom is plain and unornamented; and,

FIG. 4 is a rear elevational view thereof.

The broken line showing of the water jug is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a water vending machine, as shown and described. 